comet C/2017 M4 (ATLAS)

Astrometric data for minor planet center

COD B96

CON BRIXIIS Observatory - Eyckensbeekstraat 2, B-9150 Kruibeke, Belgium

OBS E.Bryssinck

MEA E.Bryssinck

TEL 0.4-m f/3.8 astrograph + CCD

ACK MPCReport file updated 2018.06.22 11:59:46

AC2 erik.bryssinck@telenet.be

NET USNO-A2.0

CK17M040 C2018 06 21.90067 17 54 24.01 +45 00 44.1 15.7 R B96

CK17M040 C2018 06 21.90230 17 54 23.81 +45 00 42.9 15.7 R B96

CK17M040 C2018 06 21.90394 17 54 23.57 +45 00 42.7 15.7 R B96

CK17M040 C2018 06 21.90557 17 54 23.38 +45 00 41.5 15.7 R B96

CK17M040 C2018 06 21.90721 17 54 23.16 +45 00 41.0 15.6 R B96

CK17M040 C2018 06 21.90884 17 54 22.93 +45 00 39.6 15.6 R B96

CK17M040 C2018 06 21.91058 17 54 22.70 +45 00 38.8 15.6 R B96

CK17M040 C2018 06 21.91221 17 54 22.47 +45 00 37.4 15.6 R B96

CK17M040 C2018 06 21.91384 17 54 22.27 +45 00 36.9 15.7 R B96

Photometric data obtained by use of FOCAS-II software

COD B96

CON BRIXIIS Observatory - Eyckensbeekstraat 2, B-9150 Kruibeke, Belgium

CATALOG: USNO A2.0 / CMC 14-15 - BAND: R

10x10 20x20 30x30 40x40 50x50 60x60 SNR SB COD

COMET UTC +/- +/- +/- +/- +/- +/- N FWHM CAT

------------ ------------------- ----- ----- ----- ----- ----- ----- ---- ---- ---

C/2017 M4 21/06/2018 21:47:20 15.31 14.62 14.35 14.21 14.17 14.15 26.4 17.5 B96

C/2017 M4 21/06/2018 21:47:20* 0.01 0.01 0.01 0.02 0.02 0.03 5 3.7 USN

AFRHO LOG

COMET UTC DELTA r BOX " MAG RSR CM +/- AFRHO OBS

------------ ------------------- ----- ----- ----- ----- --- ----- ---- ----- ---

C/2017 M4 21/06/2018 21:47:20 3.31 3.81 8.32 15.30 26 1156 44 3.063 B96

FoCAs 3.50

www.astrosurf.com/cometas-obs

es.groups.yahoo.com/group/Cometas_Obs

Afρ parameter according to CARA consortium

Afρ vs distance to core - with R-Bessel filter

Afρ data available via request to the CARA-Coordinator